AF issues using adapted EF lenses / AF Shootout vs 6D2

Started Oct 16, 2018 | Discussions thread
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analogue Regular Member • Posts: 231
AF issues using adapted EF lenses / AF Shootout vs 6D2

I've had EOS R for about a week now and am experiencing quite drastic AF performance issues using EF glass via the adapter compared to native on DSLR (5DIII).

This I'm sure is mainly due to EOS R's phase only Dual Pixel AF vs the dedicated AF sensor module on Canon DSLRs.

Performance seems to vary depending on the lens, STM are naturally snappier, but on big heavy USM L glass, focusing can be slow, loud (the motors seem to struggle) hunt & sometimes totally confused.

I'm very surprised there isn't much talk about this, all the reviews also seem to praise EOS R's AF. But maybe they were mainly using the new optomised RF lenses..?

Anyways, AF mode you are in also affects performance: Single point AF is ok, Continuous however is really hit & miss.

Also EOS R DPAF seems to struggle on low-contrast subjects (grey, white, black). It gets worst depending on light situation.

Overall I hear this is fairly usual AF issues using FF glass via adapters on mirrorless systems.

I guess I just expected much better performance.

Curious if others have been noticing this?

Here is a YT video that compares EOS R AF to 6D2 using adapted EF lenses:

The hit rate speaks for itself and confirms my findings.

 analogue's gear list:analogue's gear list
Canon EOS 5D Leica M9-P Canon EOS 5D Mark III Canon EOS R Canon EF 35mm F1.4L USM +7 more
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